[BACK]Return to londefdef.pm CVS log [TXT] [DIR] Up to [LON-CAPA] / loncom / xml

Diff for /loncom/xml/londefdef.pm between versions 1.189 and 1.241

version 1.189, 2003/10/24 21:48:17 version 1.241, 2004/09/15 06:31:57
Line 66  sub initialize_londefdef { Line 66  sub initialize_londefdef {
     @Apache::londefdef::description=();      @Apache::londefdef::description=();
     $Apache::londefdef::DD_redirection=0;      $Apache::londefdef::DD_redirection=0;
     $Apache::londefdef::DT_redirection=0;      $Apache::londefdef::DT_redirection=0;
       $Apache::londefdef::list_index=0;
 }  }
   
 #======================= TAG SUBROUTINES =====================  #======================= TAG SUBROUTINES =====================
Line 82  sub end_output { Line 83  sub end_output {
 }  }
 #-- <m> tag  #-- <m> tag
 sub start_m {  sub start_m {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
  $Apache::lonxml::prevent_entity_encode++;      if ($target eq 'web' || $target eq 'analyze') {
  my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);  
  $inside ='\\documentstyle{article}'.$inside;   $inside ='\\documentstyle{article}'.$inside;
  &Apache::lonxml::debug("M is starting with:$inside:");   &Apache::lonxml::debug("M is starting with:$inside:");
  my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);   my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
Line 103  sub start_m { Line 103  sub start_m {
  #&Apache::lonxml::debug("M is ends with:$currentstring:");   #&Apache::lonxml::debug("M is ends with:$currentstring:");
  $Apache::lonxml::post_evaluate=0;   $Apache::lonxml::post_evaluate=0;
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);   $currentstring = $inside;
  my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);   my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
  if ($eval eq 'on') {   if ($eval eq 'on') {
     $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);      $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
  }   }
  if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}   if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
  $Apache::lonxml::post_evaluate=0;   $Apache::lonxml::post_evaluate=0;
     } else {  
  my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);  
     }      }
     return $currentstring;      return $currentstring;
 }  }
Line 119  sub start_m { Line 117  sub start_m {
 sub end_m {  sub end_m {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'tex') {
  $Apache::lonxml::prevent_entity_encode--;  
     } elsif ($target eq 'tex') {  
  $currentstring = "";   $currentstring = "";
     } elsif ($target eq 'meta') {  
     }      }
     return $currentstring;      return $currentstring;
 }  }
Line 153  sub end_tthoption { Line 148  sub end_tthoption {
 sub start_html {  sub start_html {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($ENV{'browser.mathml'}) {      my $options=$ENV{'course.'.$ENV{'request.course.id'}.'.tthoptions'};
  &tth::ttminit();      &Apache::lontexconvert::init_tth();
  if ($ENV{'browser.unicode'}) {  
     &tth::ttmoptions('-L -u1');  
  } else {  
     &tth::ttmoptions('-L -u0');  
  }  
     } else {  
  &tth::tthinit();  
  if ($ENV{'browser.unicode'}) {  
     &tth::tthoptions('-L -u1');  
  } else {  
     &tth::tthoptions('-L -u0');  
  }  
     }  
     if ($target eq 'web' || $target eq 'edit') {      if ($target eq 'web' || $target eq 'edit') {
  $currentstring = &Apache::lonxml::xmlbegin().   $currentstring = &Apache::lonxml::xmlbegin().
     &Apache::lonxml::fontsettings();           &Apache::lonxml::fontsettings();     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  @Apache::londefdef::table = ();   @Apache::londefdef::table = ();
  $currentstring .= '\documentclass[letterpaper]{article}';   $currentstring .= '\documentclass[letterpaper]{book}';
  if ($ENV{'form.latex_type'}=~'batchmode') {$currentstring .='\batchmode';}    if ($ENV{'form.latex_type'}=~'batchmode') {$currentstring .='\batchmode';} 
  $currentstring .= '\newcommand{\keephidden}[1]{}   $currentstring .= '\newcommand{\keephidden}[1]{}'.
                            \renewcommand{\deg}{$^{\circ}$}                            '\renewcommand{\deg}{$^{\circ}$}'.
                            \usepackage{longtable}                            '\usepackage{longtable}'.
                            \usepackage{textcomp}                            '\usepackage{textcomp}'.
                            \usepackage{makeidx}                            '\usepackage{makeidx}'.
                            \usepackage[dvips]{graphicx}                            '\usepackage[dvips]{graphicx}'.
                            \usepackage{epsfig}\usepackage{calc}                            '\usepackage{epsfig}'.
 \newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}                            '\usepackage{calc}'.
 \renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large\textbf{Index}} \newline \setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}';                            '\usepackage{amsmath}'.
                             '\usepackage{amssymb}'.
                             '\usepackage{amsfonts}'.
                             '\usepackage{amsthm}'.
                             '\usepackage{amscd}'.
                             '\newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}'.
                             '\renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large\textbf{Index}} \newline \setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}';
     }      }
     return $currentstring;      return $currentstring;
 }  }
   
 sub end_html {  sub end_html {
     my ($target,$token) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = &Apache::lonxml::xmlend();   $currentstring = &Apache::lonxml::xmlend($target,$parser);
     }      }
     return $currentstring;      return $currentstring;
 }  }
Line 408  sub start_meta { Line 396  sub start_meta {
             my $display=&Apache::lonxml::get_param              my $display=&Apache::lonxml::get_param
  ('display',$parstack,$safeeval,undef,1);   ('display',$parstack,$safeeval,undef,1);
             if ($display) {              if ($display) {
  $display=&HTML::Entities::encode($display);   $display=&HTML::Entities::encode($display,'<>&"');
  $currentstring.='<'.$name.'.display>'.$display.   $currentstring.='<'.$name.'.display>'.$display.
                                '</'.$name.'.display>';                                 '</'.$name.'.display>';
             }              }
Line 550  sub start_body { Line 538  sub start_body {
  if ($ENV{'request.state'} ne 'published') {   if ($ENV{'request.state'} ne 'published') {
     $currentstring.=(<<EDITBUTTON);      $currentstring.=(<<EDITBUTTON);
  <form method="post">   <form method="post">
  <input type="submit" name="editmode" value="Edit" />   <input type="submit" name="editmode" accesskey="e" value="Edit" />
  </form>   </form>
 EDITBUTTON  EDITBUTTON
  } else {   } else {
     $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);      $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);
  }   }
    $currentstring.=&Apache::lonxml::message_location();
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = '\begin{document}';     $currentstring = '\begin{document}';  
     }       } 
Line 650  sub start_h1 { Line 639  sub start_h1 {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $pre;   my $pre;
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $pre='\begin{center}';      $pre='\begin{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $pre='\rlap{';      $pre='\rlap{';
Line 674  sub end_h1 { Line 663  sub end_h1 {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $post;   my $post='\vskip 0 mm ';
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $post='\end{center}';      $post='\end{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $post='} \hfill'.'\vskip 0 mm ';      $post='} \hfill'.'\vskip 0 mm ';
Line 700  sub start_h2 { Line 689  sub start_h2 {
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $pre;   my $pre;
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $pre='\begin{center}';      $pre='\begin{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $pre='\rlap{';      $pre='\rlap{';
Line 720  sub end_h2 { Line 709  sub end_h2 {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $post;   my $post='\vskip 0 mm ';
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $post='\end{center}';      $post='\end{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $post='} \hfill'.'\vskip 0 mm ';      $post='} \hfill'.'\vskip 0 mm ';
Line 743  sub start_h3 { Line 732  sub start_h3 {
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $pre;   my $pre;
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $pre='\begin{center}';      $pre='\begin{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $pre='\rlap{';      $pre='\rlap{';
Line 763  sub end_h3 { Line 752  sub end_h3 {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $post;   my $post='\vskip 0 mm ';
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $post='\end{center}';      $post='\end{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $post='} \hfill'.'\vskip 0 mm ';      $post='} \hfill'.'\vskip 0 mm ';
Line 786  sub start_h4 { Line 775  sub start_h4 {
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $pre;   my $pre;
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $pre='\begin{center}';      $pre='\begin{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $pre='\rlap{';      $pre='\rlap{';
Line 806  sub end_h4 { Line 795  sub end_h4 {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $post;   my $post='\vskip 0 mm ';
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $post='\end{center}';      $post='\end{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $post='} \hfill'.'\vskip 0 mm ';      $post='} \hfill'.'\vskip 0 mm ';
Line 829  sub start_h5 { Line 818  sub start_h5 {
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $pre;   my $pre;
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $pre='\begin{center}';      $pre='\begin{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $pre='\rlap{';      $pre='\rlap{';
Line 849  sub end_h5 { Line 838  sub end_h5 {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $post;   my $post='\vskip 0 mm ';
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $post='\end{center}';      $post='\end{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $post='} \hfill'.'\vskip 0 mm ';      $post='} \hfill'.'\vskip 0 mm ';
Line 872  sub start_h6 { Line 861  sub start_h6 {
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $pre;   my $pre;
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $pre='\begin{center}';      $pre='\begin{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $pre='\rlap{';      $pre='\rlap{';
Line 892  sub end_h6 { Line 881  sub end_h6 {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $post;   my $post='\vskip 0 mm ';
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $post='\end{center}';      $post='\end{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $post='} \hfill'.'\vskip 0 mm ';      $post='} \hfill'.'\vskip 0 mm ';
Line 1114  sub end_q { Line 1103  sub end_q {
 }  }
   
 #-- <p> tag (end tag optional)  #-- <p> tag (end tag optional)
   #optional attribute - align="center|left|right"
 sub start_p {  sub start_p {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $signal=1;   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}}   if ($align eq 'center') {
  if ($signal) {$currentstring .= '\par ';}      $currentstring='\begin{center}\par';
    } elsif ($align eq 'right') {
       $currentstring='\makebox['.$ENV{'form.textwidth'}.']{\hfill\llap{';
    } elsif ($align eq 'left') {
       $currentstring='\noindent\makebox['.$ENV{'form.textwidth'}.']{\rlap{';
    } else {
               $currentstring='\par ';
           }
    my $signal=1;#<p> does not work inside <b>...</b> 
    foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}
    if (!$signal) {$currentstring = '';}
    }
     }      }
     return $currentstring;      return $currentstring;
 }  }
   
 sub end_p {  sub end_p {
     my ($target,$token) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
       } elsif ($target eq 'tex') {
    my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
    if (not defined $align) {
       $currentstring.='\strut\\\\\strut ';
    } elsif ($align eq 'center') {
       $currentstring .= '\end{center}';
    } elsif ($align eq 'right') {
       $currentstring .= '}}';
    } elsif ($align eq 'left') {
       $currentstring .= '}\hfill}';
    } 
     }      }
     return $currentstring;      return $currentstring;
 }  }
Line 1143  sub start_br { Line 1155  sub start_br {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  if ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {   my @tempo=@$tagstack;
     $currentstring .= '\vskip 0.2 mm ';   my $signal=0;
    for (my $i=$#tempo;$i>=0;$i--) {
       if (($tempo[$i] eq 'b') || ($tempo[$i] eq 'strong') ||
                   ($tempo[$i] eq 'ol') || ($tempo[$i] eq 'ul') ||
                   ($tempo[$i] eq 'td') || ($tempo[$i] eq 'th'))  {
    $signal=1;
    last;
       }
    }
    if ($signal) {
       $currentstring .= ' \vskip 0 mm ';
    } elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
       $currentstring .= '\strut \\\\ \strut ';
  }   }
     }      }
     return $currentstring;      return $currentstring;
Line 1240  sub start_font { Line 1264  sub start_font {
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web') {
  my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);   my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
  if ($face=~/symbol/i) {   if ($face!~/symbol/i) {
     $Apache::lonxml::prevent_entity_encode++;  
  } else {  
     if (($ENV{'browser.fontenhance'} eq 'on') ||       if (($ENV{'browser.fontenhance'} eq 'on') || 
  ($ENV{'browser.blackwhite'} eq 'on')) { return ''; }   ($ENV{'browser.blackwhite'} eq 'on')) { return ''; }
  }   }
Line 1260  sub end_font { Line 1282  sub end_font {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web') {
  my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);  
  if ($face=~/symbol/i) {$Apache::lonxml::prevent_entity_encode--;}  
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }  elsif ($target eq 'tex') {      }  elsif ($target eq 'tex') {
  my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);   my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
Line 1331  sub start_sub { Line 1351  sub start_sub {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= "\$_{";   $currentstring .= '\ensuremath{_{';
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1342  sub end_sub { Line 1362  sub end_sub {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= "}\$";   $currentstring .= '}}';
     }      }
     return $currentstring;      return $currentstring;
 }  }
Line 1354  sub start_sup { Line 1374  sub start_sup {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= "\$^{";   $currentstring .= '\ensuremath{^{';
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1365  sub end_sup { Line 1385  sub end_sup {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= "}\$";   $currentstring .= '}}';
     }      }
     return $currentstring;      return $currentstring;
 }  }
Line 1466  sub start_li { Line 1486  sub start_li {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my  $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,1);   my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
  if ($type=~/circle/) {   my $value=&Apache::lonxml::get_param('value',$parstack,$safeeval,undef,0);
     $currentstring .= ' \item[o] ';   #FIXME need to support types i and I 
    if ($type=~/disc/) {
       $currentstring .= ' \item[$\bullet$] ';
    } elsif ($type=~/circle/) {
       $currentstring .= ' \item[$\circ$] ';
  } elsif ($type=~/square/) {   } elsif ($type=~/square/) {
     $currentstring .= ' \item[$\Box$] ';      $currentstring .= ' \item[$\diamond$] ';
  } elsif ($type ne '') {    } elsif ($type eq '1') {
     $currentstring .= ' \item['.$type.'] ';      $currentstring .= ' \item['.($Apache::londefdef::list_index+1).'.]';
    } elsif ($type eq 'A') {
       $currentstring .= ' \item['.('A'..'Z')[$Apache::londefdef::list_index].'.]';
    } elsif ($type eq 'a') {
       $currentstring .= ' \item['.('a'..'z')[$Apache::londefdef::list_index].'.]';
    } elsif ($value ne '') {
       $currentstring .= ' \item['.$value.'] ';
  } else {   } else {
     $currentstring .= ' \item ';      $currentstring .= ' \item ';
  }     }  
     }    $Apache::londefdef::list_index++;
       }
     return $currentstring;      return $currentstring;
 }  }
   
Line 1523  sub start_ul { Line 1554  sub start_ul {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);   my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
    $Apache::londefdef::list_index=0;
  if ($TeXtype eq 'disc') {   if ($TeXtype eq 'disc') {
     $currentstring .= ' \renewcommand{\labelitemi}{$\bullet$}      $currentstring .= '\renewcommand{\labelitemi}{$\bullet$}'.
                                 \renewcommand{\labelitemii}{$\bullet$}                                 '\renewcommand{\labelitemii}{$\bullet$}'. 
                                 \renewcommand{\labelitemiii}{$\bullet$}                                '\renewcommand{\labelitemiii}{$\bullet$}'.
                                 \renewcommand{\labelitemiv}{$\bullet$}';                                '\renewcommand{\labelitemiv}{$\bullet$}';
  } elsif ($TeXtype eq 'circle') {   } elsif ($TeXtype eq 'circle') {
     $currentstring .= ' \renewcommand{\labelitemi}{$\circ$}      $currentstring .= '\renewcommand{\labelitemi}{$\circ$}'.
                                 \renewcommand{\labelitemii}{$\circ$}                                 '\renewcommand{\labelitemii}{$\circ$}'. 
                                 \renewcommand{\labelitemiii}{$\circ$}                                '\renewcommand{\labelitemiii}{$\circ$}'.
                                 \renewcommand{\labelitemiv}{$\circ$}';                                '\renewcommand{\labelitemiv}{$\circ$}';
  } elsif ($TeXtype eq 'square') {   } elsif ($TeXtype eq 'square') {
     $currentstring .= ' \renewcommand{\labelitemi}{$\diamond$}      $currentstring .= '\renewcommand{\labelitemi}{$\diamond$}'.
                                 \renewcommand{\labelitemii}{$\diamond$}                                 '\renewcommand{\labelitemii}{$\diamond$}'. 
                                 \renewcommand{\labelitemiii}{$\diamond$}                                '\renewcommand{\labelitemiii}{$\diamond$}'.
                                 \renewcommand{\labelitemiv}{$\diamond$}';                                '\renewcommand{\labelitemiv}{$\diamond$}';
  }   }
  $currentstring .= '\begin{itemize}';     $currentstring .= '\strut \begin{itemize}';  
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1550  sub end_ul { Line 1582  sub end_ul {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[2];        $currentstring = $token->[2];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}   $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}'.
                                 \renewcommand{\labelitemii}{$\bullet$}                                  '\renewcommand{\labelitemii}{$\bullet$}'. 
                                 \renewcommand{\labelitemiii}{$\bullet$}                                 '\renewcommand{\labelitemiii}{$\bullet$}'.
                                 \renewcommand{\labelitemiv}{$\bullet$}';                                   '\renewcommand{\labelitemiv}{$\bullet$}\strut ';  
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1611  sub start_ol { Line 1643  sub start_ol {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
    $Apache::londefdef::list_index=0;
  my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);   my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
  if ($type eq '1') {   if ($type eq '1') {
     $currentstring .= ' \renewcommand{\labelenumi}{\arabic{enumi}.}      $currentstring .= '\renewcommand{\labelenumi}{\arabic{enumi}.}'.
                                 \renewcommand{\labelenumii}{\arabic{enumii}.}                                 '\renewcommand{\labelenumii}{\arabic{enumii}.}'. 
                                 \renewcommand{\labelenumiii}{\arabic{enumiii}.}                                '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
                                 \renewcommand{\labelenumiv}{\arabic{enumiv}.}';                                '\renewcommand{\labelenumiv}{\arabic{enumiv}.}';
  } elsif ($type eq 'A') {   } elsif ($type eq 'A') {
     $currentstring .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}      $currentstring .= '\renewcommand{\labelenumi}{\Alph{enumi}.}'.
                                 \renewcommand{\labelenumii}{\Alph{enumii}.}                                 '\renewcommand{\labelenumii}{\Alph{enumii}.}'. 
                                 \renewcommand{\labelenumiii}{\Alph{enumiii}.}                                '\renewcommand{\labelenumiii}{\Alph{enumiii}.}'.
                                 \renewcommand{\labelenumiv}{\Alph{enumiv}.}';                                '\renewcommand{\labelenumiv}{\Alph{enumiv}.}';
  } elsif ($type eq 'a') {   } elsif ($type eq 'a') {
     $currentstring .= ' \renewcommand{\labelenumi}{\alph{enumi}.}      $currentstring .= '\renewcommand{\labelenumi}{\alph{enumi}.}'.
                                 \renewcommand{\labelenumii}{\alph{enumii}.}                                '\renewcommand{\labelenumii}{\alph{enumii}.}'.
                                 \renewcommand{\labelenumiii}{\alph{enumiii}.}                                '\renewcommand{\labelenumiii}{\alph{enumiii}.}'.
                                 \renewcommand{\labelenumiv}{\alph{enumiv}.} ';                                '\renewcommand{\labelenumiv}{\alph{enumiv}.}';
  } elsif ($type eq 'i') {   } elsif ($type eq 'i') {
     $currentstring .= ' \renewcommand{\labelenumi}{\roman{enumi}.}      $currentstring .= '\renewcommand{\labelenumi}{\roman{enumi}.}'.
                                 \renewcommand{\labelenumii}{\roman{enumii}.}                                '\renewcommand{\labelenumii}{\roman{enumii}.}'.
                                 \renewcommand{\labelenumiii}{\roman{enumiii}.}                                '\renewcommand{\labelenumiii}{\roman{enumiii}.}'.
                                 \renewcommand{\labelenumiv}{\roman{enumiv}.} ';                                '\renewcommand{\labelenumiv}{\roman{enumiv}.}';
  } elsif ($type eq 'I') {   } elsif ($type eq 'I') {
     $currentstring .= ' \renewcommand{\labelenumi}{\Roman{enumi}.}      $currentstring .= '\renewcommand{\labelenumi}{\Roman{enumi}.}'.
                                 \renewcommand{\labelenumii}{\Roman{enumii}.}                                '\renewcommand{\labelenumii}{\Roman{enumii}.}'.
                                 \renewcommand{\labelenumiii}{\Roman{enumiii}.}                                '\renewcommand{\labelenumiii}{\Roman{enumiii}.}'.
                                 \renewcommand{\labelenumiv}{\Roman{enumiv}.} ';                                '\renewcommand{\labelenumiv}{\Roman{enumiv}.}';
  }   }
  $currentstring .= '\begin{enumerate}';     $currentstring .= '\strut \begin{enumerate}';  
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1649  sub end_ol { Line 1682  sub end_ol {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[2];        $currentstring = $token->[2];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = '\end{enumerate} \renewcommand{\labelenumi}{\arabic{enumi}.}   $currentstring = '\end{enumerate}\renewcommand{\labelenumi}{\arabic{enumi}.}'.
                                           \renewcommand{\labelenumii}{\arabic{enumii}.}                                          '\renewcommand{\labelenumii}{\arabic{enumii}.}'.
                                           \renewcommand{\labelenumiii}{\arabic{enumiii}.}                                          '\renewcommand{\labelenumiii}{\arabic{enumiii}.}'.
                                           \renewcommand{\labelenumiv}{\arabic{enumiv}.}';                                            '\renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';  
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1766  sub end_dd { Line 1799  sub end_dd {
 }  }
   
 #-- <table> tag (end tag required)  #-- <table> tag (end tag required)
   #list of supported attributes: border,width,TeXwidth
 sub start_table {  sub start_table {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $textwidth='';      my ($textwidth,$currentstring)=('','');
     if (not defined @Apache::londefdef::table) {  
  $textwidth=&recalc($ENV{'form.textwidth'});  
  $textwidth=~/(\d+\.?\d*)/;  
  $textwidth=0.95*$1;  
     } else {  
  $textwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);  
     }  
     my $currentstring = '';  
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $aa = {};   my $aa = {};
  push @Apache::londefdef::table, $aa;    push @Apache::londefdef::table, $aa; 
  $Apache::londefdef::table[-1]{'row_number'} = -1;   $Apache::londefdef::table[-1]{'row_number'} = -1;
         #table's width          #maximum table's width (default coincides with text line length)
    if ($#Apache::londefdef::table==0) {
       $textwidth=&recalc($ENV{'form.textwidth'}); #result is always in mm
       $textwidth=~/(\d+\.?\d*)/;
       $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame
    } else {
       if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
    #the maximum width of nested table is determined by LATeX width of parent cell
    $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]; 
       } else {
                 #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
    $textwidth=$Apache::londefdef::table[-2]{'width'};
    for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
       $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
    }
       }
    }
  my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);   my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
  if (not defined $TeXwidth) {   if (not defined $TeXwidth) {
     my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);      my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
     if ($htmlwidth=~/%/) {      if ($htmlwidth=~/%/) {
                   $Apache::londefdef::table[-1]{'percent'}=1;
  $htmlwidth=~/(\d+)/;   $htmlwidth=~/(\d+)/;
  my $value=$1*$textwidth/100;   $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;;
  $Apache::londefdef::table[-1]{'width'}=$value;  
     } else {      } else {
  $Apache::londefdef::table[-1]{'width'}=$textwidth;   $Apache::londefdef::table[-1]{'width'}=$textwidth;
     }      }
  } elsif ($TeXwidth=~/%/) {   } elsif ($TeXwidth=~/%/) {
       $Apache::londefdef::table[-1]{'percent'}=1;
     $TeXwidth=~/(\d+)/;      $TeXwidth=~/(\d+)/;
     my $value=$1*$textwidth/100;              $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
             $Apache::londefdef::table[-1]{'width'}=$value;  
  } else {   } else {
     $Apache::londefdef::table[-1]{'width'}=$textwidth;      $Apache::londefdef::table[-1]{'forcetablewidth'}=1;
       $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
  }           }        
         #table's border          #table's border
  my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval,undef,1);    my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval); 
           my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
  unless (defined $border) { $border = 0; }   unless (defined $border) { $border = 0; }
  if ($border) {    if ($border) { 
     $Apache::londefdef::table[-1]{'hinc'} = '\hline ';       $Apache::londefdef::table[-1]{'hinc'} = '\hline '; 
Line 1813  sub start_table { Line 1857  sub start_table {
     $Apache::londefdef::table[-1]{'vinc'} = '&';       $Apache::londefdef::table[-1]{'vinc'} = '&'; 
     $Apache::londefdef::table[-1]{'vvinc'} = '';      $Apache::londefdef::table[-1]{'vvinc'} = '';
  }   }
  $Apache::londefdef::table[-1]{'output'} = ' \noindent \begin{tabular} ';   if ($#Apache::londefdef::table==0) {
  $currentstring = '\keephidden{NEW TABLE ENTRY}';      $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
     }   }
    $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
           $Apache::londefdef::table[-1]{'TeXlen'}=[];
           $Apache::londefdef::table[-1]{'objectlen'}=[];
           $Apache::londefdef::table[-1]{'objectsignal'}=[];
           $Apache::londefdef::table[-1]{'maxlen'}=[];
           $Apache::londefdef::table[-1]{'minlen'}=[];
           $Apache::londefdef::table[-1]{'content'}=[];
           $Apache::londefdef::table[-1]{'align'}=[];
           $currentstring='\keephidden{NEW TABLE ENTRY}';
      }
     return $currentstring;      return $currentstring;
 }  }
     
Line 1827  sub end_table { Line 1881  sub end_table {
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $inmemory = '';   my $inmemory = '';
  my $output = '';   my $output = '';
  #construct header of the table   my $WARNING='';
  my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};          #width of columns from TeXwidth attributes
  for (my $in=0;$in<=$Apache::londefdef::table[-1]{'counter_columns'};$in++) {   for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
     $header_of_table .= $Apache::londefdef::table[-1]{'columns'}[$in].$Apache::londefdef::table[-1]{'vvinc'};      for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
    if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
       $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
    }
       }
  }   }
  $header_of_table .= '}';          #free space and number of empty columns
  #define the length of the table cells   my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
  #always starts with TeXwidth (if defined everything else is ignored)   if ($#Apache::londefdef::table ne 0) {$available_space=0.9*$available_space;} 
  my @length_row_final = split(/,/,$Apache::londefdef::table[-1]{'TeXlengthrow'}[0]);   for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
  for (my $in=1;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {      if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
     my @length_row = split(/,/,$Apache::londefdef::table[-1]{'TeXlengthrow'}[$in]);   $empty_columns++;
     for (my $jn=0;$jn<=$#length_row;$jn++) {      } else {
  if ($length_row_final[$jn]<$length_row[$jn]) {$length_row_final[$jn]=$length_row[$jn];}   $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
     }      }
  }   }
  #continues trying estimate the width of raw data          #boundaries for contents columns
  my @length_raw_row = split(/,/,$Apache::londefdef::table[-1]{'lengthrow'}[0]);   my @min_len=();#columns can not be narrower 
  for (my $in=1;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {   my @max_len=();#maximum length of column
     my @length_row = split(/,/,$Apache::londefdef::table[-1]{'lengthrow'}[$in]);   for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
     for (my $jn=0;$jn<=$#length_row;$jn++) {   my ($localmin,$localmax)=(0,0);
  if ($length_raw_row[$jn]<$length_row[$jn]) {$length_raw_row[$jn]=$length_row[$jn];}   for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
     }      if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
  }   $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
         #comparing of TeXwidth and raw data width      }
  my $available_length=$Apache::londefdef::table[-1]{'width'};      if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
  my $needed=0;   $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
  for (my $jn=0;$jn<=$#length_row_final;$jn++) {      }
     if ($length_row_final[$jn]!=0) {   }
  $available_length=$available_length-$length_row_final[$jn];   push @min_len, $localmin;
  $needed++;   push @max_len, $localmax;
     }   }
  }   for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
  $needed=$#length_row_final-$needed+1;      my $localmin=0,;
  for (my $jn=0;$jn<=$#length_row_final;$jn++) {      for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
     if ($length_row_final[$jn]==0) {   if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
  if ($length_raw_row[$jn]<$available_length) {      $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
     $length_row_final[$jn]=$length_raw_row[$jn];   }
     $available_length=$available_length-$length_raw_row[$jn];      }
     $needed--;      if ($max_len[$jn]<$localmin) {
    $max_len[$jn]=$localmin;
        $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
       }#object size is bigger
       if ($min_len[$jn]<$localmin) {
    $min_len[$jn]=$localmin;
    $Apache::londefdef::table[-1]{'objectsignal'}[$jn]=1;
       }#object size is bigger
       if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
    $min_len[$jn]=0;
    $max_len[$jn]=0;
       }
    }
          #final adjustment of column width
    my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
    my @adjust=();
           #step 1. adjustment by maximum value
    my $space_neeeded=0;
    for (my $jn=0;$jn<=$#max_len;$jn++) {
       $space_neeeded=$space_neeeded+$max_len[$jn];
    }
    if ($space_neeeded<=$available_space) {
       for (my $jn=0;$jn<=$#max_len;$jn++) {
    if ($fwidth[$jn]==0) {
       $fwidth[$jn]=$max_len[$jn];
    }
       }
    } else {
           #step 2. adjustment by minimum value (estimation)
       $space_neeeded=0;
       for (my $jn=0;$jn<=$#min_len;$jn++) {
    $space_neeeded+=$min_len[$jn];
       }
       if ($space_neeeded>$available_space) {
    $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
    for (my $jn=0;$jn<=$#max_len;$jn++) {
       if ($fwidth[$jn]==0) {
    $fwidth[$jn]=$min_len[$jn];
       }
    }
    #check if we have objects which can be scaled
    my $how_many_to_scale=0;
    my @to_scale=();
    for (my $jn=0;$jn<=$#max_len;$jn++) {
       if ($Apache::londefdef::table[-1]{'objectsignal'}[$jn] eq '1') {
    $how_many_to_scale++;
    push @to_scale, $jn;
       }
    }
    if ($how_many_to_scale>0) {
       my $space_to_adjust=($space_neeeded-$available_space)/$how_many_to_scale;
       foreach my $jn (@to_scale) {
    for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
       $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/;
       if ($1 ne '') {
    my $current_length=&recalc($1);
    $current_length=~/(\d+\.?\d*)/;
    $current_length=$current_length-$space_to_adjust;
    $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/width=$current_length mm/;
       }
       $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~m/\[(\d+\.?\d*)\s*mm\]/;
       if ($1 ne '') {
    my $current_length=$1;
    $current_length=$current_length-$space_to_adjust;
    $Apache::londefdef::table[-1]{'content'}[$in][$jn]=~s/\[(\d+\.?\d*)\s*mm\]/\[$current_length mm\]/;
       }
    }
    $fwidth[$jn]=$fwidth[$jn]-$space_to_adjust;
       }
    }
       } else {
         #step 3. adjustment over minimal + corrections
    my $enlarge_coef=$available_space/$space_neeeded;
    my $acsessive=0;
    for (my $jn=0;$jn<=$#min_len;$jn++) {
       $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
       if ($adjust[$jn]>$max_len[$jn]) {
    $fwidth[$jn]=$max_len[$jn];
    $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
    $adjust[$jn]=0;
       }
    }
    if ($acsessive>0) {
    #we have an excess of space and can redistribute it
       my $notempty_columns=0;
       for (my $jn=0;$jn<=$#min_len;$jn++) {
    if ($adjust[$jn]!=0) {
       $notempty_columns++;
    }
       }
       my $per_column=$acsessive/$notempty_columns;
       for (my $jn=0;$jn<=$#min_len;$jn++) {
    if ($adjust[$jn]!=0) {
       $adjust[$jn]+=$per_column;
       $fwidth[$jn]=$adjust[$jn];
    }
       }
    } else {
       for (my $jn=0;$jn<=$#min_len;$jn++) {
    $fwidth[$jn]=$adjust[$jn];
       }
  }   }
     }      }
  }   }
  for (my $jn=0;$jn<=$#length_row_final;$jn++) {          #use all available width if it is defined in % or as TeXwidth
     if ($length_row_final[$jn]==0) {          if (($Apache::londefdef::table[-1]{'percent'}==1) || ($Apache::londefdef::table[-1]{'forcetablewidth'}==1)) {
  $length_row_final[$jn]=0.9*$available_length/$needed;      my $current=0; 
       for (my $i=0;$i<=$#fwidth;$i++) {  
    $current+=$fwidth[$i];
       }
       my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
       for (my $i=0;$i<=$#fwidth;$i++) {  
    $fwidth[$i]*=$coef;
       }
    }
           #removing of empty columns if allowed
           my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
    if ($permission eq 'yes') {
       my @cleaned_table=();
               my @cleaned_header=();
       my $colind=0;
       for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
    if ($fwidth[$jn]!=0) {
       #we need to copy column
       for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
    $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
    $cleaned_header[$colind]=$fwidth[$jn];
       }
       $colind++;
    }
     }      }
       $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
       @fwidth=@cleaned_header;
  }   }
    #construct header of the table
    my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
    for (my $in=0;$in<=$#fwidth;$in++) {
       $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
    }
    $header_of_table .= '}';
  #fill the table   #fill the table
  for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {   for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
     for (my $jn=0;$jn<=$#length_row_final;$jn++) {      for (my $jn=0;$jn<=$#fwidth;$jn++) {
  my $substituted=$length_row_final[$jn];   if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
  $Apache::londefdef::table[-1]{'rowdata'}[$in]=~s/TOBECHANGEDONNUMBER/$substituted mm/;      $output.='\vspace*{-6 mm}\begin{center}';
     }   } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
     $output .=  $Apache::londefdef::table[-1]{'rowdata'}[$in];      $output.=' \hfill \llap{'
     chop $output;   }
     $output .= ' \\\\ ';   $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
    if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
       $output.='\end{center}\vspace*{-6 mm}';
    } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
       $output.='} ';
    }
                   if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
       }
       $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
  }   }
  $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$output.$Apache::londefdef::table[-1]{'hinc'}.'\end{tabular}\vskip 0 mm ';   $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
  if ($#Apache::londefdef::table > 0) {       if ($#Apache::londefdef::table > 0) {    
     my $inmemory = $Apache::londefdef::table[-1]{'output'};      my $inmemory = $Apache::londefdef::table[-1]{'output'};
     pop @Apache::londefdef::table;      pop @Apache::londefdef::table;
Line 1906  sub start_tr { Line 2103  sub start_tr {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $Apache::londefdef::table[-1]{'row_number'}++;   $Apache::londefdef::table[-1]{'row_number'}++;
  my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);   my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if ($alignchar ne '') {   if ($alignchar ne '') {
     push @ {$Apache::londefdef::table[-1]{'rows'} }, $alignchar;      push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
  } else {   } else {
     push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';      push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
  }   }
  push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});   push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
  $Apache::londefdef::table[-1]{'counter_columns'} = -1;   $Apache::londefdef::table[-1]{'counter_columns'} = -1;
  $Apache::londefdef::table[-1]{'TeXlength'} = '';   push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
   $Apache::londefdef::table[-1]{'length'} = '';   push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
    push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
    push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
    push @ {$Apache::londefdef::table[-1]{'content'}}, [];
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1929  sub end_tr { Line 2129  sub end_tr {
  if ($Apache::londefdef::TD_redirection) {   if ($Apache::londefdef::TD_redirection) {
     &end_td_tex($parstack,$parser,$safeeval);          &end_td_tex($parstack,$parser,$safeeval);    
  }   }
  push @{ $Apache::londefdef::table[-1]{'TeXlengthrow'} },$Apache::londefdef::table[-1]{'TeXlength'};  
  push @{ $Apache::londefdef::table[-1]{'lengthrow'} },$Apache::londefdef::table[-1]{'length'};  
     }      }
     return $currentstring;      return $currentstring;
 }  }
Line 1967  sub tag_check { Line 2165  sub tag_check {
     
 sub start_td_tex {  sub start_td_tex {
     my ($parstack,$parser,$safeeval) = @_;      my ($parstack,$parser,$safeeval) = @_;
     my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);      my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
     if ($what_to_push eq '') {      if ($alignchar eq '') {
  $what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;   $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
     }      }
     push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;      push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
     $Apache::londefdef::table[-1]{'counter_columns'}++;      $Apache::londefdef::table[-1]{'counter_columns'}++;
       my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
       if (defined $TeXwidth) {
    my $current_length=&recalc($TeXwidth);
    $current_length=~/(\d+\.?\d*)/;
    push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
       }
     &Apache::lonxml::startredirection();      &Apache::lonxml::startredirection();
     return '';      return '';
 }  }
Line 1983  sub end_td_tex { Line 2187  sub end_td_tex {
     my $data=&Apache::lonxml::endredirection();      my $data=&Apache::lonxml::endredirection();
     my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);      my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
     if (defined $TeXwidth) {      if (defined $TeXwidth) {
  my $current_length=&recalc($TeXwidth);   push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
  $current_length=~/(\d+)/;   push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
  $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';   push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
  $Apache::londefdef::table[-1]{'length'} .= '0,';  
     } else {      } else {
  if ($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {   if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
     my $current_length=&recalc($1);      my $garbage_data=$data;
     $current_length=~/(\d+\.?\d*)/;      my $fwidth=0;
     $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';              while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
     $Apache::londefdef::table[-1]{'length'} .= '0,';   my $current_length=&recalc($1);
    $current_length=~/(\d+\.?\d*)/;
    if ($fwidth<$1) {$fwidth=$1;}
    $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
       }
               while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
    my $current_length=$1;
    if ($fwidth<$current_length) {$fwidth=$current_length;}
    $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
       }
       push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
       push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
    } elsif ($data=~/\\parbox\{\s*\d+\.?\d*\s*(mm|cm|in|pc|pt)*\s*\}/ or $data=~/\\epsfxsize\s*=\s*\d+\.?\d*\s*(mm|cm|in|pc|pt)*/) {
       my $garbage_data=$data;
       my $fwidth=0;
               while ($garbage_data=~/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)\s*\}/) {
    my $current_length=&recalc($1);
    $current_length=~/(\d+\.?\d*)/;
    if ($fwidth<$1) {$fwidth=$1;}
    $garbage_data=~s/\\parbox\{\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
       }
               while ($garbage_data=~/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
    my $current_length=&recalc($1);
    $current_length=~/(\d+\.?\d*)/;
    if ($fwidth<$1) {$fwidth=$1;}
    $garbage_data=~s/\\epsfxsize\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
       }
       push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
       push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       $data=~s/\\\\\s*$//; 
  } else {     } else {  
     $data=~s/^\s+(\S.*)/$1/;       $data=~s/^\s+(\S.*)/$1/; 
     $data=~s/(.*\S)\s+$/$1/;      $data=~s/(.*\S)\s+$/$1/;
     $data=~s/(\s)+/$1/;      $data=~s/(\s)+/$1/;
     my $current_length=0;      my ($current_length,$min_length)=(0,0);
     if ($data=~/\\vskip/) {      if ($data=~/\\vskip/) {
                 my $newdata=$data;                  my $newdata=$data;
  $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;   $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
  my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);   my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
  foreach my $elementdata (@newdata) {   foreach my $elementdata (@newdata) {
     my $lengthnewdata=1.8*LATEX_length($elementdata);      my $lengthnewdata=2.5*&LATEX_length($elementdata);
     if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}      if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
                       my @words=split(/ /,$elementdata);
       foreach my $word (@words) {
    my $lengthword=2.5*&LATEX_length($word);
    if ($min_length<$lengthword) {$min_length=$lengthword;}
       }
  }   }
     } else {      } else {
  $current_length=1.8*LATEX_length($data);   $current_length=2.5*&LATEX_length($data);
                       my @words=split(/ /,$data);
       foreach my $word (@words) {
    my $lengthword=2*&LATEX_length($word);
    if ($min_length<$lengthword) {$min_length=$lengthword;}
       }
     }      }
     $Apache::londefdef::table[-1]{'length'} .= $current_length.',';      push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
     $Apache::londefdef::table[-1]{'TeXlength'} .= '0,';      push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
       push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
  }           }        
     }      }
  for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {            for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {         
     $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;      $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
  }   }
     @{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{TOBECHANGEDONNUMBER}{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};      push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
     return'';      return'';
 }  }
   
Line 2039  sub start_th { Line 2287  sub start_th {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);   $Apache::londefdef::TD_redirection = 1;
  if ($what_to_push eq '') {   &tagg_check('tr','th',$tagstack,$parstack,$parser,$safeeval);
     $what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;  
  }  
  push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;  
  $Apache::londefdef::table[-1]{'counter_columns'}++;  
  &Apache::lonxml::startredirection();  
     }       } 
     return $currentstring;      return $currentstring;
 }     }   
            
   sub tagg_check {
       my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
       my @ar=@$parstack; 
       for (my $i=$#ar-1;$i>=0;$i--) {
    if (lc($$tagstack[$i]) eq $good_tag) {
       &start_th_tex($parstack,$parser,$safeeval);
       last;
    } elsif (lc($$tagstack[$i]) eq $bad_tag) {
       splice @ar, $i+1;
       &end_th_tex(\@ar,$parser,$safeeval);
       &start_th_tex($parstack,$parser,$safeeval);
       last;
    }
       }
       return '';
   }
    
   sub start_th_tex {
       my ($parstack,$parser,$safeeval) = @_;
       my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
       if ($alignchar eq '') {
    $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
       }
       push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
       $Apache::londefdef::table[-1]{'counter_columns'}++;
       my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
       if (defined $TeXwidth) {
    my $current_length=&recalc($TeXwidth);
    $current_length=~/(\d+\.?\d*)/;
    push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
       }
       &Apache::lonxml::startredirection();
       return '';
   }
   
   sub end_th_tex {
       my ($parstack,$parser,$safeeval) = @_;
       my $current_row = $Apache::londefdef::table[-1]{'row_number'};
       my $data=&Apache::lonxml::endredirection();
       my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
       if (defined $TeXwidth) {
    push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
    push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
    push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       } else {
    if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
       my $garbage_data=$data;
       my $fwidth=0;
               while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
    my $current_length=&recalc($1);
    $current_length=~/(\d+\.?\d*)/;
    if ($fwidth<$1) {$fwidth=$1;}
    $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
       }
               while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
    my $current_length=$1;
    if ($fwidth<$current_length) {$fwidth=$current_length;}
    $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
       }
       push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
       push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
    } else {  
       $data=~s/^\s+(\S.*)/$1/; 
       $data=~s/(.*\S)\s+$/$1/;
       $data=~s/(\s)+/$1/;
       my ($current_length,$min_length)=(0,0);
       if ($data=~/\\vskip/) {
                   my $newdata=$data;
    $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
    my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
    foreach my $elementdata (@newdata) {
       my $lengthnewdata=2.5*&LATEX_length($elementdata);
       if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
                       my @words=split(/ /,$elementdata);
       foreach my $word (@words) {
    my $lengthword=2.5*&LATEX_length($word);
    if ($min_length<$lengthword) {$min_length=$lengthword;}
       }
    }
       } else {
    $current_length=2.5*&LATEX_length($data);
                       my @words=split(/ /,$data);
       foreach my $word (@words) {
    my $lengthword=2*&LATEX_length($word);
    if ($min_length<$lengthword) {$min_length=$lengthword;}
       }
       }
       push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
       push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
    }        
       }
    for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {         
       $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
    }
       #make data bold
       $data='\textbf{'.$data.'}';
       push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
       return'';
   }
   
 sub end_th {  sub end_th {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[2];        $currentstring = $token->[2];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $current_row = $Apache::londefdef::table[-1]{'row_number'};          $Apache::londefdef::TD_redirection =0;
  my $data=&Apache::lonxml::endredirection();   &end_th_tex($parstack,$parser,$safeeval);
  my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);  
  if (defined $TeXwidth) {  
     my $current_length=&recalc($TeXwidth);  
     $current_length=~/(\d+)/;  
     $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';  
     $Apache::londefdef::table[-1]{'length'} .= '0,';  
  } else {  
     if ($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {  
  my $current_length=&recalc($1);  
  $current_length=~/(\d+)/;  
  $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';  
  $Apache::londefdef::table[-1]{'length'} .= '0,';  
     } else {       
  $data=~/^\s*(\S.*)/;  
  $data=$1;  
  $data=~/(.*\S)\s*$/;  
  $data=$1;  
  my $current_length=2*length($data);  
  $Apache::londefdef::table[-1]{'length'} .= $current_length.',';  
  $Apache::londefdef::table[-1]{'TeXlength'} .= '0,';  
     }          
  }  
  for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {                                  
     $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;  
  }  
  $data='\textbf{'.$data.'}';  
  @{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{TOBECHANGEDONNUMBER}{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};  
     }      }
     return $currentstring;      return $currentstring;
 }  }
        
 #-- <img> tag (end tag forbidden)  #-- <img> tag (end tag forbidden)
 sub start_img {  sub start_img {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
Line 2095  sub start_img { Line 2416  sub start_img {
  undef,1);   undef,1);
     if (not $src and ($target eq 'web' or $target eq 'tex')) {       if (not $src and ($target eq 'web' or $target eq 'tex')) { 
  my $inside = &Apache::lonxml::get_all_text("/img",$parser);   my $inside = &Apache::lonxml::get_all_text("/img",$parser);
  &Apache::lonnet::logthis("inside was $inside");  
  return '';   return '';
     }      }
     $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;      $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
     my $currentstring = '';      my $currentstring = '';
     my $width_param = '';  
     my $height_param = '';  
     my $scaling = .3;      my $scaling = .3;
     if ($target eq 'web') {      if ($target eq 'web') {
  if ($ENV{'browser.imagesuppress'} ne 'on') {   if ($ENV{'browser.imagesuppress'} ne 'on') {
Line 2116  sub start_img { Line 2434  sub start_img {
     $currentstring.='[IMAGE: '.$alttag.']';      $currentstring.='[IMAGE: '.$alttag.']';
  }   }
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
    my $oldSRC=$src;
           $oldSRC=~s/\.(gif|jpg|png)$/\.eps/;
  $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);   $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
  &image_replication($src);  
  #if original gif/jpg/png file exist do following:   #if original gif/jpg/png file exist do following:
  if (-e $src) {             if (-e $src) {
     #defines the default size of image      #what is the image size?
     my $image = Image::Magick->new;      my $width_param=&image_size($src,$scaling,$parstack,$safeeval);
     my $current_figure = $image->Read($src);              my ($file,$path)=&file_path($src); 
     $width_param = $image->Get('width') * $scaling;;  
     $height_param = $image->Get('height') * $scaling;;  
     undef $image;  
     #do we have any specified size of the picture?  
     my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);  
     my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);  
     my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,  
    undef,1);  
     if ($TeXwidth ne '') {    
  if ($TeXwidth=~/(\d+)\s*\%/) {  
     $width_param = $1*$ENV{'form.textwidth'}/100;  
  } else {   
     $width_param = $TeXwidth;  
  }  
     } elsif ($TeXheight ne '') {  
  $width_param = $TeXheight/$height_param*$width_param;  
     } elsif ($width ne '') {  
  $width_param = $width*$scaling;        
     }  
     if ($width_param > $ENV{'form.textwidth'}) {$width_param =0.95*$ENV{'form.textwidth'}}  
     my $file;  
     my $path;  
     if ($src =~ m!(.*)/([^/]*)$!) {  
  $file = $2;   
  $path = $1.'/';   
     }   
     my $newsrc = $src;      my $newsrc = $src;
     $newsrc =~ s/\.(gif|jpg|png)$/.eps/i;      $newsrc =~ s/\.(gif|jpg|png)$/.eps/i;
       &Apache::lonnet::repcopy($oldSRC);
     $file=~s/\.(gif|jpg|png)$/.eps/i;      $file=~s/\.(gif|jpg|png)$/.eps/i;
     #where can we find the picture?      #where can we find the picture?
     if (-e $newsrc) {      if (-e $newsrc) {
Line 2168  sub start_img { Line 2462  sub start_img {
  $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';   $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
     }      }
  } else {   } else {
     #there aren't eps or ps - so create eps       #care about eps dynamical generation
     my $temp_file;      $currentstring.='\vskip 1 mm '.&eps_generation($src,$file,$width_param);
     my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";  
     $temp_file = Apache::File->new('>>'.$filename);   
     print $temp_file "$src\n";  
     $newsrc=~s/\/home\/httpd\/html\/res//;  
     $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;  
     $currentstring .= '\vskip 1 mm \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';  
  }   }
     }      }
  } else {   } else {
Line 2202  sub start_img { Line 2490  sub start_img {
  $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';   $currentstring .=&Apache::edit::text_arg('height (pixel):','height',$token,5).'<br />';
  $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);   $currentstring .=&Apache::edit::text_arg('TeXwidth (mm):','TeXwidth',$token,5);
  $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);   $currentstring .=&Apache::edit::text_arg('TeXheight (mm):','TeXheight',$token,5);
    $currentstring .=&Apache::edit::select_arg('Alignment:','align',
      ['','bottom','middle','top','left','right'],$token,5);
  $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();   $currentstring .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
  my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval);   my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval);
  my $alt=&Apache::lonxml::get_param('alt',$parstack,$safeeval);   my $alt=&Apache::lonxml::get_param('alt',$parstack,$safeeval);
Line 2212  sub start_img { Line 2502  sub start_img {
  if ($height) { $currentstring.=' height="'.$height.'" '; }   if ($height) { $currentstring.=' height="'.$height.'" '; }
  $currentstring .= ' />';   $currentstring .= ' />';
     } elsif ($target eq 'modified') {      } elsif ($target eq 'modified') {
  my $constructtag=&Apache::edit::get_new_args($token,$parstack,   my ($osrc,$owidth,$oheight)=
      $safeeval,'src','alt',      ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
      'TeXwidth','TeXheight',   my $ctag=&Apache::edit::get_new_args($token,$parstack,
      'width','height');       $safeeval,'src','alt','align',
  $src=$token->[2]{'src'};       'TeXwidth','TeXheight',
  if (!$token->[2]{'width'} && !$token->[2]{'height'}) {       'width','height');
     $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);   my ($nsrc,$nwidth,$nheight)=
     &image_replication($src);      ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
     if (-e $src) {   my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
  my $image = Image::Magick->new;   &image_replication($loc);
  my ($width, $height, $size, $format) = $image->Ping($src);   my ($iwidth,$iheight);
  if ($width && $height) {   if (-e $loc) {
     $token->[2]{'width'} =$width;      my $image = Image::Magick->new;
     $token->[2]{'height'}=$height;      $image->Read($loc);
     $constructtag=1;      ($iwidth, $iheight) = ($image->Get('width'),
      $image->Get('height'));
    }
    if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
       # changed image or no size specified,
               # if they didn't explicitly change the 
               # width or height use the ones from the image
       if ($iwidth && $iheight) {
    if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
       $token->[2]{'width'} = $iwidth;$ctag=1;
    }
    if ($oheight == $nheight || (!$nwidth && !$nheight)) {
       $token->[2]{'height'}=$iheight;$ctag=1;
  }   }
     }      }
  }   }
  if ($constructtag) {$currentstring=&Apache::edit::rebuild_tag($token);}   my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
    # if we don't have a width or height
    if ($iwidth && $cwidth && !$cheight) {
       $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
    }
    if ($iheight && $cheight && !$cwidth) {
       $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
    }
    if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
     }      }
     return $currentstring;      return $currentstring;
 }  }
Line 2362  sub start_allow { Line 2672  sub start_allow {
     $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);      $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
     $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=      $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
  &Apache::lonnet::clutter($src);   &Apache::lonnet::clutter($src);
     &image_replication($src);      if ($target eq 'tex') { &image_replication($src); }
     my $result;      my $result;
     if ($target eq 'edit') {      if ($target eq 'edit') {
  $result .=&Apache::edit::tag_start($target,$token);   $result .=&Apache::edit::tag_start($target,$token);
Line 3359  sub image_replication { Line 3669  sub image_replication {
     return '';      return '';
 }  }
   
   sub image_size {
       my ($src,$scaling,$parstack,$safeeval)=@_;
       #size of image from gif/jpg/jpeg/png 
       my $image = Image::Magick->new;
       my $current_figure = $image->Read($src);
       my $width_param = $image->Get('width') * $scaling;;
       my $height_param = $image->Get('height') * $scaling;;
       undef $image;
       #do we have any specified LaTeX size of the picture?
       my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);
       my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);
       #do we have any specified web size of the picture?
       my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
      undef,1);
       if ($TeXwidth ne '') {  
    if ($TeXwidth=~/(\d+)\s*\%/) {
       $width_param = $1*$ENV{'form.textwidth'}/100;
    } else { 
       $width_param = $TeXwidth;
    }
       } elsif ($TeXheight ne '') {
    $width_param = $TeXheight/$height_param*$width_param;
       } elsif ($width ne '') {
    $width_param = $width*$scaling;      
       }
       if ($width_param > $ENV{'form.textwidth'}) {$width_param =0.95*$ENV{'form.textwidth'}}
       return $width_param;
   }
   
   sub eps_generation {
       my ($src,$file,$width_param) = @_;     
       my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
       my $temp_file = Apache::File->new('>>'.$filename); 
       print $temp_file "$src\n";
       my $newsrc = $src;
       $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
       $newsrc=~s/\/home\/httpd\/html\/res//;
       $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
       $newsrc=~s/\/\.\//\//;
       $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
       if ($newsrc=~/\/home\/httpd\/lonUsers\//) {
    $newsrc=~s/\/home\/httpd\/lonUsers//;
    $newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//;
       }
       if ($newsrc=~/\/userfiles\//) {
    return ' \graphicspath{{'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
       } else {
    return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
       }
   }
   
   sub file_path {     
       my $src=shift;
       my ($file,$path); 
       if ($src =~ m!(.*)/([^/]*)$!) {
    $file = $2; 
    $path = $1.'/'; 
       } 
       return $file,$path;
   }
   
 sub recalc {  sub recalc {
     my $argument = shift;      my $argument = shift;
     if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}      if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
Line 3379  sub recalc { Line 3750  sub recalc {
   
 sub LATEX_length {  sub LATEX_length {
     my $garbage=shift;      my $garbage=shift;
     $garbage=~s/^\s+(\S.*)/$1/;       $garbage=~s/^\s+$//;
     $garbage=~s/(.*\S)\s+$/$1/;      $garbage=~s/^\s+(\S.*)/$1/;#space before 
     $garbage=~s/(\s)+/$1/;      $garbage=~s/(.*\S)\s+$/$1/;#space after 
     $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;      $garbage=~s/(\s)+/$1/;#only one space
     $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$|\$)//g;      $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
     $garbage=~s/(\\alpha|\\beta|\\gamma|\\delta|\\epsilon|\\verepsilon|\\zeta|\\eta|\\theta|\\vartheta|\\iota|\\kappa|\\lambda|\\mu|\\nu|\\xi|\\pi|\\varpi|\\rho|\\varrho|\\sigma|\\varsigma|\\tau|\\upsilon|\\phi|\\varphi|\\chi|\\psi|\\omega|\\Gamma|\\Delta|\\Theta|\\Lambda|\\Xi|\\Pi|\\Sigma|\\Upsilon|\\Phi|\\Psi|\\Omega)/1/g;      $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
       $garbage=~s/([^\\])\$/$1/g;#$
       $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
      $garbage=~s/(\\alpha|\\beta|\\gamma|\\delta|\\epsilon|\\verepsilon|\\zeta|\\eta|\\theta|\\vartheta|\\iota|\\kappa|\\lambda|\\mu|\\nu|\\xi|\\pi|\\varpi|\\rho|\\varrho|\\sigma|\\varsigma|\\tau|\\upsilon|\\phi|\\varphi|\\chi|\\psi|\\omega|\\Gamma|\\Delta|\\Theta|\\Lambda|\\Xi|\\Pi|\\Sigma|\\Upsilon|\\Phi|\\Psi|\\Omega)/1/g;
     $garbage=~s/(\\pm|\\mp|\\times|\\div|\\cdot|\\ast|\\star|\\dagger|\\ddagger|\\amalg|\\cap|\\cup|\\uplus|\\sqcap|\\sqcup|\\vee|\\wedge|\\oplus|\\ominus|\\otimes|\\circ|\\bullet|\\diamond|\\lhd|\\rhd|\\unlhd|\\unrhd|\\oslash|\\odot|\\bigcirc|\\Box|\\Diamond|\\bigtriangleup|\\bigtriangledown|\\triangleleft|\\triangleright|\\setminus|\\wr)/1/g;      $garbage=~s/(\\pm|\\mp|\\times|\\div|\\cdot|\\ast|\\star|\\dagger|\\ddagger|\\amalg|\\cap|\\cup|\\uplus|\\sqcap|\\sqcup|\\vee|\\wedge|\\oplus|\\ominus|\\otimes|\\circ|\\bullet|\\diamond|\\lhd|\\rhd|\\unlhd|\\unrhd|\\oslash|\\odot|\\bigcirc|\\Box|\\Diamond|\\bigtriangleup|\\bigtriangledown|\\triangleleft|\\triangleright|\\setminus|\\wr)/1/g;
     $garbage=~s/(\\le|\\ll|\\leq|\\ge|\\geq|\\gg|\\neq|\\doreq|\\sim|\\simeq|\\subset|\\subseteq|\\sqsubset|\\sqsubseteq|\\in|\\vdash|\\models|\\supset|\\supseteq|\\sqsupset|\\sqsupseteq|\\ni|\\dash|\\perp|\\approx|\\cong|\\equiv|\\propto|\\prec|\\preceq|\\parallel|\\asymp|\\smile|\\frown|\\bowtie|\\succ|\\succeq|\\mid)/1/g;      $garbage=~s/(\\le|\\ll|\\leq|\\ge|\\geq|\\gg|\\neq|\\doreq|\\sim|\\simeq|\\subset|\\subseteq|\\sqsubset|\\sqsubseteq|\\in|\\vdash|\\models|\\supset|\\supseteq|\\sqsupset|\\sqsupseteq|\\ni|\\dash|\\perp|\\approx|\\cong|\\equiv|\\propto|\\prec|\\preceq|\\parallel|\\asymp|\\smile|\\frown|\\bowtie|\\succ|\\succeq|\\mid)/1/g;
     $garbage=~s/(\\not<|\\\\not\\le|\\not\\prec|\\not\\preceq|\\not\\subset|\\not\\subseteq|\\not\\sqsubseteq|\\not\\in|\\not>|\\not\\ge|\\not\\succ|\\notsucceq|\\not\\supset|\\notsupseteq|\\not\\sqsupseteq|\\notin|\\not=|\\not\\equiv|\\not\\sim|\\not\\simeq|\\not\\approx|\\not\\cong|\\not\\asymp)/1/g;      $garbage=~s/(\\not<|\\\\not\\le|\\not\\prec|\\not\\preceq|\\not\\subset|\\not\\subseteq|\\not\\sqsubseteq|\\not\\in|\\not>|\\not\\ge|\\not\\succ|\\notsucceq|\\not\\supset|\\notsupseteq|\\not\\sqsupseteq|\\notin|\\not=|\\not\\equiv|\\not\\sim|\\not\\simeq|\\not\\approx|\\not\\cong|\\not\\asymp)/1/g;
     $garbage=~s/(\\leftarrow|\\gets|\\Leftarrow|\\rightarrow|\\to|\\Rightarrow|\\leftrightarrow|\\Leftrightarrow|\\mapsto|\\hookleftarrow|\\leftharpoonup|\\leftkarpoondown|\\rightleftharpoons|\\longleftarrow|\\Longleftarrow|\\longrightarrow|\\Longrightarrow|\\longleftrightarrow|\\Longleftrightarrow|\\longmapsto|\\hookrightarrow|\\rightharpoonup|\\rightharpoondown|\\uparrow|\\Uparrow|\\downarrow|\\Downarrow|\\updownarrow|\\Updownarrow|\\nearrow|\\searrow|\\swarrow|\\nwarrow)/1/g;      $garbage=~s/(\\leftarrow|\\gets|\\Leftarrow|\\rightarrow|\\to|\\Rightarrow|\\leftrightarrow|\\Leftrightarrow|\\mapsto|\\hookleftarrow|\\leftharpoonup|\\leftkarpoondown|\\rightleftharpoons|\\longleftarrow|\\Longleftarrow|\\longrightarrow|\\Longrightarrow|\\longleftrightarrow|\\Longleftrightarrow|\\longmapsto|\\hookrightarrow|\\rightharpoonup|\\rightharpoondown|\\uparrow|\\Uparrow|\\downarrow|\\Downarrow|\\updownarrow|\\Updownarrow|\\nearrow|\\searrow|\\swarrow|\\nwarrow)/11/g;
     $garbage=~s/(\\aleph|\\hbar|\\imath|\\jmath|\\ell|\\wp|\\Re|\\Im|\\mho|\\prime|\\emptyset|\\nabla|\\surd|\\partial|\\top|\\bot|\\vdash|\\dashv|\\forall|\\exists|\\neg|\\flat|\\natural|\\sharp|\\\||\\angle|\\backslash|\\Box|\\Diamond|\\triangle|\\clubsuit|\\diamondsuit|\\heartsuit|\\spadesuit|\\Join|\\infty)/ /g;      $garbage=~s/(\\aleph|\\hbar|\\imath|\\jmath|\\ell|\\wp|\\Re|\\Im|\\mho|\\prime|\\emptyset|\\nabla|\\surd|\\partial|\\top|\\bot|\\vdash|\\dashv|\\forall|\\exists|\\neg|\\flat|\\natural|\\sharp|\\\||\\angle|\\backslash|\\Box|\\Diamond|\\triangle|\\clubsuit|\\diamondsuit|\\heartsuit|\\spadesuit|\\Join|\\infty)/11/g;
     $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;       $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
       #remove some other LaTeX command
       $garbage=~s|\\(\w+)\\|\\|g;  
       $garbage=~s|\\(\w+)(\s*)|$2|g;  
       $garbage=~s|\+|11|g;
     my  $value=length($garbage);      my  $value=length($garbage);
     return $value;      return $value;
 }  }
Removed from v.1.189  
changed lines
  Added in v.1.241

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